Stumbled across a bar called Aloha just down the road from the Twin Towers the other week.
Monday to Friday from 5 - 9 p.m. you pay 30rm to get in and then a bottle of Carlsberg (the 5% stuff not the 4% pish at home) is 1rm per bottle.
You have to take your bottle back each time and can only get one bottle at a time (even if there's a few of you all paid up and sitting together) which is a bit of a ball ache but 4 hours of drinking bottles for under 25p is certainly good value in Malaysia's capital.
Has screens for the football, plenty of music, dart boards and gets very lively with a mixture of local office workers and westerners.